As the demon butler of Phantomhive Household in Black Butler, Sebastian is a handsome, omnipotent and youthful guy with black hair, red eyes and pale skin tone. Personally, I think Sebastian is a perfect man. He is dedicated to Ciel Phantomhive. Probably, most girls want such kind of boyfriend. He is so popular that we could find his name appears in other manga or anime series.
In terms of Black Butler Sebastian cosplay, the black tailcoat suit is the typical anime costume, plus a pair of white gloves. All in all, Sebastian Michaelis is always a good idea for cosplayers to enjoy cool time.